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Sleep Cycle alarm clock

By Northcube AB


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Waking up made easy.

An intelligent alarm clock that analyzes your sleep and wakes you in the lightest sleep phase – the natural way to wake up feeling rested and relaxed. No need to place your device in bed - Sleep Cycles uses sound analysis sleep tracking.

Sleep Cycle helps millions of people all around the world wake up rested.

Continuously rated as the best smart alarm clock on the market. Featured in: CNN, Wired, The Guardian, The Wall Street Journal, BBC, The New York Times.

#1 Top Paid app in United States
#1 Top Paid app in United Kingdom
#1 Top Paid app in Japan
#1 Top Paid app in Germany
#1 Top Paid app in France
...and more.

* Our patented technology monitors your sleep movements using sound or vibration analysis.

* Sleep Cycle then finds the optimal time to wake you up during a 30 minute window that ends at your set alarm time.

* Recommended placement: Near the bed or on the floor.

As you sleep you go through different phases, ranging from deep sleep to light sleep. The phase you are in when your alarm goes off is critical for how tired you will feel when you wake up.

Since you move differently in bed during the different phases, Sleep Cycle can use the microphone or accelerometer in your iPhone to monitor your movements and determine which sleep phase you are in.

Sleep Cycle wakes you when you are in your lightest sleep phase.

Sleep Cycle was developed using proven sleep science and years of research and development.




√ Sleep analysis with our patented sound analysis technology or if you prefer, the sensitive accelerometer in your iPhone

√ Detailed sleep statistics and sleep graphs

√ Carefully selected alarm melodies

√ Snooze by shaking or double tapping the phone lightly

√ Snore detection - detect, track and measure your snoring

√ Fully integrated with Apple Health. Exchanges sleep analysis and heart rate

√ Customizable wake up window. From instant (regular alarm clock) up to 90 minutes

√ Background mode - set your alarm and exit Sleep Cycle - sleep analysis will continue in the background

√ Support for the M7 and M8 co-processor - measure your daily physical activity and see how it affects your Sleep Quality

√ Export sleep data to Excel for detailed analysis


√ Online backup - secure your data online to make sure it’s always with you

√ Long term trends - compare your sleep with the world

√ Snore trends - view historical snore trends data

√ Sleep aid - helps you fall asleep faster

√ Sleep notes - see how events such as drinking coffee, eating too much or having a stressful day affect your sleep quality

√ Wake up mood - see how using Sleep Cycle affects your morning moods

√ Weather - see how weather affects your Sleep Quality

√ Heart rate monitor - measure your resting heart rate (RHR) every morning using the built-in camera in your device

√ Philips HUE light bulb support - simulate a natural sunrise to give you an even softer wake-up

and more


Ability to charge your phone by the bed.
Ability to place your phone near the bed, such as on a nightstand table or on the floor.


The optional Premium subscription costs $29.99 per year.

It will be charged from your iTunes account after the purchase. You can manage or cancel your auto-renewable subscription by entering the user settings in iTunes after the purchase. The subscription will be auto-renewed 24 hours before the subscription period ends with the same kind of subscription you already bought to the same price. It's not possible to abort the subscription during the time it's active. Terms and Privacy:

What's New in Version 5.4.1

Snore detection implemented in Trends. With the latest release, Sleep Cycle does not only detect, measure, and track your snoring - it also gives you historical snore data in the Premium Trends view.


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Customer Reviews

The Secret to Waking up on Time

I think I have found the perfect combination of alarm clocks. I always set Sleep Cycle to be my first alarm, and another app called SpinMe Alarm Clock as my backup. Sleep Cycle usually wakes me up in my optimal wake up time, but sometimes it just isn’t enough for me and I’ll either snooze through it or turn it off and go back to bed. If Sleep Cycle fails to wake me up, my backup alarm SpinMe will start blaring which can only be turned off if I get out of bed and spin around twice before it finally shuts off! Crazy but it works and I haven’t been late to work since I started doing this. And no you can't just spin the phone around in your hand!

Sleep Cycle really does help in waking you up during your light sleep. I can feel it working most mornings. And I have studied the science behind sleep so I can attest that the premise of this app isn’t merely a placebo, but something that has actually been proven. However the problem that this alarm clock doesn’t solve is that sometimes (especially on nights where you get very little sleep), it can be really easy to ignore your alarm clock and really hard to wake up. That’s where SpinMe Alarm comes in, an alarm clock that is impossible to ignore and forces you awake. I highly recommend using these 2 alarms together. Best few dollars I’ve ever spent!!

I am a sleep deprived teenager

As a teen, I often find myself tired and unable to be productive (even if I wasn't tired though, would I somehow find the motivation to drag myself off the couch to do something worthwhile with my life? Probably not.) My nightly rituals include finding every excuse to stay up later, and I just cannot find it in me to get to bed
early! Only after realizing that if I'm always tired I won't be able to binge as much Netflix did I decide to take action against my foul habits. I downloaded the first sleep app I saw and set it up to decide it's -and my own- fate. I remember it vividly: it was in the wee hours of the night, and I set the alarm for 6:00 am to get ready for the endless cycle of torture we call public schooling. Upon waking up to the beautiful sounds of wind chimes at the ripe hour of 6 am, I realized that I was in fact not tired in the slightest. It was a miracle, and for once I did not have to fight the overwhelming urge to take a nap in AP Physics. Thank you Sleep Cycle, for allowing me to barely scrape by in Pre-Calculus with a 90.3%. I will forever be indebted to you.

Great, still missing a few luxuries

First, this app is great, and the latest update is fantastic! It works well and it's well designed. That said, there are a number of features I wish it had—they all exist in various other alarm apps, but those ones don't have the motion tracking ability this app does. For instance, it doesn't let me set some sort of challenge to disable the alarm (to make sure I'm really awake).

I also frequently wake up, turn off my alarm, and accidentally fall asleep again, and another app with motion tracking lets me set a toggle such that it will go off again if it doesn't detect any motion for a few minutes.

In addition, it has a feature where it will confirm with you if you set the alarm to a PM time. The idea behind this is great, but it's implemented poorly: if I'm going to bed at 3 AM and set an alarm for 1:00, what are the odds that I'm planning to sleep for 10 hours compared to the odds that I'm planning to sleep for 22 hours? It should really be a ">12 hour" confirmation rather than a "PM" confirmation.

Other features I wish it had include:
- automatically record audio when noise is detected (sleep talking)
- set a reminder for after the alarm is dismissed ("remember to wear a tie today!")
- provide a place to record notes upon waking (dream journal)

There are others that I've thought of that I can't remember at the moment, but that's all for now.
And all that said, it's a great app, and I believe it's the best option of its kind!

Sleep Cycle alarm clock
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Health & Fitness
  • Updated:
  • Version: 5.4.1
  • Size: 79.3 MB
  • Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish
  • Seller:

Compatibility: Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Premium$1.99
  2. Premium$9.99
  3. Premium$29.99
  4. Premium$23.99
  5. Premium$4.99
  6. Premium$10.99
  7. Premium$2.99
  8. year SleepSecure membership$1.99
  9. Premium$6.99
  10. Premium$14.99